Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2523305 A
Publication typeGrant
Publication dateSep 26, 1950
Filing dateDec 5, 1947
Priority dateDec 5, 1947
Publication numberUS 2523305 A, US 2523305A, US-A-2523305, US2523305 A, US2523305A
InventorsJohnson George W
Original AssigneeAmerican Laundry Mach Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Conveyer type washing machine
US 2523305 A
Abstract  available in
Images(3)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 26, 1950 G. w. JoHNsoN convmza TYPE WASHING ummm 3 Sheets-Sheet 1 Filed Dec. 5, 1947 FIG-I INVENTOR GEORGE W. JOHNSON hay, fida.. f

0l ATTORNEYS M Sept. 26, 1950 G. w. JoHNsoN coNvEYER TYPE wAsHmG'uAcHINE 3 Sheets-Sheet 2 Filed Dec. 5, '1947 INVENTOR GEORGE W. JOHNSON 59% Wwf-9%@ f m AT TORN EYS -Patented Sept. 26, 1950 oFFlcE CON'VEYER TYPE WASHING'MACHINE George W. Johnson, Cincinnati, Ohio, assignor to The American Laundry Machinery Company, Cincinnati, Ohio, a corporation oi' Ohio Application December 5, 1947, Serial No. 789,953

' 12 claims.. (c1. ca -53) This invention relates to work tumbling or agitating apparatus, for use in drying, washing, dry cleaning or otherwise treating any kind of work. While useful for treating. any kind of material, for convenience the invention is here. shown and .described for use in cleaning or drying articles made of textile fabrics, such as sheets, pillowcases, or other iiat work, or underwear, shirts or other articles'of wearing apparel. One object of the invention is to provide'an improved machine which thoroughlyl and eiilciently agitates the work, and which may be actuated to unload the work when the tumbling operation is concluded.

Another object is to utilize the same operating device both for agitation and unloading.

Still another object is to vsimplify the driving and operating mechanism.

A further object is'to provide an improved agitating machine including an enclosing casing 'L and an agitator therein, the casing being tiltable to a position in which operation of the agitator unloads or discharges the work.

Another object is to provide an improved ma. chine of the class described, embodying an unloading agitator, but also provided with means for causing the now of a stream of drying air over the work while the agitator is in operation, but also enabling said agitator again to be used for work discharge purposes, as aforesaid.

Finally, another object of the invention is generally to provide a relatively simple machine which operates efiiciently both for agitating and unloading purposes, which is easily controlled, and which also is durable and not likely to get out of order in service.

I Further objects of the invention in part are obvious and in part will appear more in detail hereinafter.

In the drawings, Fig. 1 is a front elevation of The machine shown embodies a suitable frame I0 in which are journalled two alined shaft members I I in the form of end trunnions supporting large circular imperforate end heads in the form of sprocket members I2. The shafts are journalled and rotate in bearing openings in two end members Il, each consisting of a central plate or disc I4 and a series (five being shown) oi' radiating spokes I5. Spokes in the two members I3 are opposite or in alinement with each other, each pair having journalled in their outer ends a shaft I6 carrying two small sprockets I1, one at each end. At yeach end of the machine the several sprockets I2, Il are, in the same plane and the two sets of sprockets support'an endless link belt or apron of any suitable form marked I8. Iifhe inner stretch` of this belt, where it travels in engagement with the teeth of end heads I2, together with said. end heads, forms the work receiving or holding pocket, the end, bends or loops of the belt, and the two shafts I6 which support them, being .spaced apart circumferentially of the heads I2 to provide the necessary opening to the work holding space.

Shafts I6 and the spiderlike end members in which they rotate support a casing or drum including end walls I9 and an outer wall 20, said casing fully enclosing the endless belt and its supporting sprockets and shafts, and being provided with a suitable opening 2 I, to provide access to the work feeding gap in the conveyor and the work agitating space within it.

Each end sprocket I2 is provided with two y radially extending ribs or lifters 22, staggered so that those on one sprocket are midway of those on the other. As the sprockets rotate and the belt moves with them the work is carriediip and dropped, with motion endwise of the chamber toward its opposite end, thus turning it over and vigorously agitating it.

When the machine is used for Washing or dry cleaning, the link belt or apron of course should be pei'forate or foraminous in order to permit free flow through it of the liquid washing or cleaning agent.

'Iiwo curved guards, m/a/rked 23,24, partly cover the end bends or loops /of the conveyor belt and its large sprockets and prevent the work from traveling around the loops. One of these, 23,

.- is hinged so that it can be swung out of the Way when unloading the work, while the other is iixed to the casing.

A suitable drain valve 25, treadle operated, permits the liquid to be drained alway.

One of the two upper shafts I6, that one at the right in Fig. 2, serves as the means by which said conveyor is driven. Said shaft, externally of the casing, is provided with a sprocket 26 from which Ian endless chain 21 passes over an idler sprocket 21a to a driving sprocket 28 journalled on shaft II and connected to a large sprocket 29 connected by chain 30 to a. driving sprocket lI on the shaft of a reversible electric motor 32 mounted on a stand or support 3l. By

suitable drum or other control, conventionally-indicated at 50, Fig. 2, this motor may be caused to rotate intermittently in opposite directions for the agitating operation, and by manual control. as by switch II, continuously in one direction, for the unloading operation, as will be readily understood lwithout detailed description, since the controlV parts form no part of the present invention. Y

The casing I9, together in it, normally occupies the position shown in Fig. 2, to which lit is biased by a tension spring 34' extending from the frame to a pin 38 on one of the radiating spokes I5 of an end member I3. A uid pressure -servomotor 36 having a. piston 38a is pivoted to the frame at 36h. Its rod 38e is connected to a suitable point on one of the end spokes I5. Fluid pressure is supplied to the motor through suitable pipe connections, such as conduit 36d.

The operation is as follows: To charge or load the machine. the uid pressure to motor 36 is turned on. The motor piston rod 36e moves up to the dotted line position, Fig. 2, turning the casing and its contained parts about 90 around the central axis bringing the two sets of sprockets II about .which the end loops of the belt travel to new positions, one thereof shown in dot-dash lines, Fig. 2, thus moving the casing opening to the front and to a level convenient to the operator.

Then the work is loaded into the machine through said opening.

with au parts witn- 4 for use as a drying tumbler in which damp work is agitated and dried. A

So far as the swinging'casing, the endless belt or conveyor and their manner of operation are concerned, these are much like those before describedand require little description. No drain valve, of course. is necessary. But the lower portion of the outer casing wall, where the drain valve of Fig. 2 is located, is here provided with an opening 40 adapted by swinging motion of the casing to be moved or adjusted into or out of registration with the inlet opening to a suction conduit 4I communicating with a fan or blower 42 having an outlet 43 and operated .by motor M.

At the top of the machine, the wide opening to the casing, through which it is loaded or unloaded, is likewise adapted, by swinging motion of the casing to be adjusted into or out of registration with two air supply passages. one, marked 45, for cold air, communicating directly with the outside air, and the other, marked 46 for hot air, also so communicating but being provided with nned steam heating ycoils 4'l. Both Now, the air pressure in the servomotor is released or evacuated and spring 34 returns the parts to the operating position shown in full lines Fig-'2, 'with the charging opening at the top. Guard 23 is swung into operating position, if not already there.

Next, with the drain valve closed, suitable washing detergent or volatile solvent is run into the Washing chamber.

Then the current is turned on to motor 32 and its controller 50 is set into operation. Thereupon the conveyor is driven rst in one direction and then in the other, intermittently for short periods, as is usual in washing or cleaning machines. The effect is to thoroughly and violently agitato the work, rwhich is lifted by the lifters 22 and dropped along inclined lines so that it I After the desired washing period has elapsed the motor is stopped, the liquid is drained on, iluid pressure is turned on to the servomotor and the casing and other parts are returned to the former loading and unloading position. Then by manual operation of switch 5I motor I2 is made to run continuously in one direction, to wit, that direction which. turns the large sprockets vI2 lclockwise in Fig. 2. The conveyor then acts as an unloading device, carrying the work up to and ejecting it through the casing opening into a tub, basket or other container provided .for the purpose. The machine is then loaded again and the operation is repeated.

Fig. 3 illustrates similar mechanism adapted passages are provided lwith hinged ydoors or dampers 48 which may be opened to various positions to vary the proportions of hot and cold f air and thus secure any desired mixture of the two and produce or ,maintain any desired temperature in the drying chamber.

Suitable gaskets not shown close and seal all joints around the edges of the casing openings, such as around shafts It, when the parts are in operating or drying position.'

The operation of this form is as follows:

By action of the servomotor the drum or casing is rst shifted to loading position, as before, the work holding pocket is loaded, and then the servomotor is deenergized to permit the drum to return to its operating position shown.

The driving motor is started and the endless belt lis again rotated or caused to travel intermittently first in one direction and then in the other.

Fan motorV 44 is started and a current of drying air is passed through the drying chamber. This usually is at rst hot air, until the work is dried, and then cold air to cool it.

When the work is dried and cooled the drum is again shifted to unloading position and by operation of the conveyor continuously in the proper direction the work is ejected from the machine.

It should be observed that discharge of the load, after washing, does not necessarily require continuous travel of the endless belt in one direction only. During intermittent reversal of the direction of travel ofy the belt, such as during washing, the belt usually travels in each direction a distance equal to several times (say 3, 4 or more times) the total peripheral dimension of one of the end heads or sprockets I2. Therefore, when the drum has been shifted to unloading position, the ordinary reversing operation of the belt will usually unload the work during that phase of belt travel which is in the unloading direction. I-f all of the work is not ejected during one cycle, the remaining pieces are ejected during the next cycle, and when the belt is traveling in the opposite direction the work is merely held in the washing chamber.

It should further be noted that the lifting and tumbling members 22 are of special form, each attachedl to one of the end head sprockets I2, those on one head being staggered with reference to those on the other. These members are of generally plate or rib form, each extending from the sprocket on which it is mounted toward, but stopping short of,.the other sprocket. Also, the general planes of these lifting plates are radial,

their outer edges lying closely adjacent to the belt, while their inner` edges are inclined and lieoutwardly from the central axis. Since they are attached to sprockets denitely related, by the belt, to sprockets on the shaft IB, the latter being journalled in the drum end heads. the lifting members always remain in the same staggere relation to each other.

Bothforms of-the invention are simple, easy to control and operate, and very elcient for their intended purposes.v t

Other advantages of the invention will be parent to those skilled in the art.

What I claim is: i 1. Work agitating apparatus ofthe character described, comprising a generally drum form casingprovided with end plates -and an outer wall having a chargingl opening, said drum being vmounted to swing about a horizontal axis, and a combined work agitator and conveyor mounted within said drum for swinging motion as a unit therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gap opposite said charging opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the end heads,l and a series of parallel shaft members supporting the end loops and outer stretch of said belt.

2. Work agitating apparatus of the character described, comprising a generally drum form casing provided with end plates and an outer wall having a charging opening, said drum' being mounted to swing about a horizontal axis, and a atrasos having two vend loops spaced apart'to provide a gap opposite saidicharging opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the belt, means for causing rotation of said end heads combined Work agitator and conveyor mounted within said drum for swinging motion as a unittherewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gap opposite said charging opening and outer and inner stretches, the latter mounted upon and traveling withthe peripheral portions of 'the end heads, a series of parallel shaft members supporting the end loops and outer stretch of said belt, and operating means connected to said drum for shifting it either to a loading position with said charging opening at the front or to an oper` ating position' with said opening at the top.

3. Work agitating apparatus of the character described, comprising a generally drum form casing provided with end plates and an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, andja combined work @agitator and conveyor mounted` within said drun' for swinging motion as a unit therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gap opposite said charging opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the end heads, a. series of parallel shaft members supporting the end loops and outer stretch of said belt, and means for causing rotation of said .and endwise travel of said belt, and operating means connected to said drum for shifting it either to a loading position with said charging opening at the front or to an operating position with said opening at the top.

5. Work agitating apparatus of the character described, comprising `a generally drum form casing provided'with end plates and an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conveyor mounted -within said drum for swinging motion as a unit therewith, comprising end heads, an endless' belt having two end loops spaced apart to provide a gap oppositesaid charging opening and outer and inner stretches, the latter mounted upon and travelingJ with the peripheral portions of the end heads, end plates mounted externally of the drum, one at each end thereof, yfor rota-tion about the drum axis, and a series of.` parallel shafts rotatably supported upon said described, comprising a generally drum form. casing provided with end platesand an outer wallhaving a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conveyor mountedwithin said drum -for swinging motion as a unittherewith, comprising end heads, an endless belt --having two end loops spaced apart to provide a.

gap opposite said charging. opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the end heads, a series of parallel shaft members supporting the end loops and outer stretch of said belt, and means operatively connected to one of said shafts for rotating the same in any position to which the drum may be swung.

7. Work agitating apparatus of thecharacter described, comprising a generally drum form casing provided with end plates and an outer wall having a charging opening, said drum being mounted to swing about'a horizontal axis, and a combined work agitator and conveyor mounted within said drum for swinging motion as a unit therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a. gap opposite said charging opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the end heads, a series of parallel shaft members supporting the end loops and outer stretch of said belt, operating means connected to said drum for shifting it either to 'a loading position with said charging opening at the front or to an operating position with said opening at the top, and means operatively connected to one of said shafts for rotating the same in either of said positions of the drum.

8. Work agitating apparatus of the character.

described, comprising a generally drum form casing provided with imperforate end plates and an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conassessori-f'- 7 'reyor-mounted within said drum for swinging plate." andouter wall of said drum being imperforate, except for said charging opening, and

thereby adapted to hold liquid in which work supportedby said belt is agitated.

9. Work agitating apparatus of the character described, comprising a generally drum iorm casing provided with impei'forate end plates andmotion as a unitY therewith, comprising end `.heads, an endless belt having two end loops loops and outer stretch of said belt, the end plates and outer wall of said drum being imperforate, except for said charging opening, and

thereby adapted to hold liquid in which work supported by said belt is agitated, and a drain valve in the outer wall of said drum casing opposite the charging opening thereto.

10. Work agitating apparatus of the character described, comprising a generally drum form casing provided with end plates and an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conveyor mounted within said drum for swinging motion as a unit therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gap opposite said charging opening and outer and inner stretches, the latter mounted upon and traveling with the peripheral portions of the end heads, .a series of parallel shaft members supporting the end loops and outer stretch of said belt, the outer wall of said drum being provided- 8 casing provided with end plates and an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conveyor mountedA within said drum for swinging motion as a unitv therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gapopposite said chargingl opening and outer and inner stretches, the'latter mounted upon and traveling with'theperipheral portions of the end heads, a series of parallel shaft members supporting the end loops and outer stretch of. said belt, and a plurality of work liiting and tumbling members mounted upon each of the end heads, each such member being of generally rib form lying in a radial plane and extending from its end head toward but stopping short ot the other end head.

12. Work agitating apparatus of the character described, comprising a generally drum form casing provided with end platesand an outer wall having a charging opening, said drum being mounted to swing about a horizontal axis, and a combined work agitator and conveyor mounted within said drum for swinging motion as a unit therewith, comprising end heads, an endless belt having two end loops spaced apart to provide a gap opposite said charging opening and outer and inner stretches, the latter mounted upon and tr'a-veling with the peripheral portions of the end heads, a series of parallel shaft members supporting the end loops and outer stretch of said belt, and a plurality of work lifting and tumbling members mounted upon each of the end heads, each such member being of generally rib form lying in a radial plane and extending from its end head toward but stopping short of the other end head, those on one end head being staggered with reference to those on the other. y

GEORGE W. JOHNSON.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1224191 *Aug 4, 1914May 1, 1917Wenger & CoMachine for polishing metallic bodies.
US1656528 *Dec 9, 1926Jan 17, 1928Millard Joseph WPickling apparatus
US2292787 *Jun 21, 1940Aug 11, 1942American Laundry Mach CoWashing machine
US2308420 *Oct 12, 1940Jan 12, 1943American Chicle CompanyCoating apparatus adapted for confections
US2412763 *Jun 12, 1943Dec 17, 1946Baker David SMethod and apparatus of treating materials
US2447802 *Aug 22, 1945Aug 24, 1948American Wheelabrator & EquipmTumbling machine
GB531346A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3009343 *Feb 10, 1960Nov 21, 1961Gen ElectricLaundry machine
US3100978 *Aug 15, 1961Aug 20, 1963Braithwaite I & Son Eng LtdWashing machines
US7441422 *Nov 15, 2001Oct 28, 2008Lg Electronics Inc.Drum type washing machine with rotatable baffle
US7627960 *Jun 30, 2003Dec 8, 2009General Electric CompanyClothes dryer drum projections
US7644514 *Dec 23, 2004Jan 12, 2010Bsh Bosch Und Siemens Hausgeraete GmbhClothes dryer
US7661203 *Jun 20, 2007Feb 16, 2010Candy S.P.A.Basket for washing machine, washer-dryer, and the like
US7997006 *Oct 31, 2007Aug 16, 2011Lg Electronics Inc.Laundry machine and control method thereof
US8256136 *Nov 12, 2008Sep 4, 2012Lg Electronics Inc.Laundry treating apparatus
US8424220Jun 11, 2007Apr 23, 2013Lg Electronics Inc.Laundry dryer and method for controlling the same
US8931186Feb 15, 2007Jan 13, 2015Lg Electronics Inc.Drying machine and method for controlling the same
Classifications
U.S. Classification68/53, 366/228, 68/175, 68/210, 68/139, 68/157, 68/60, 34/601
International ClassificationD06F95/00
Cooperative ClassificationD06F95/00
European ClassificationD06F95/00